Traverse the zone tree to prerender indirect zones properly

Fixes #151
Added setters and getters, comments, and more
Added bkgFill colors to WordZone and fill to blur
fixed table hockey example to run fullscreen
Merge remote-tracking branch 'erik/master' into merging

Merging pull request #158. Resolves issue #153.
Merge remote-tracking branch 'zach/master' into merging

Merging pull request #156. Resolves issue #151.